Viby was first mentioned in 1331. The current castle was built by Charles IX of Sweden to his wife Kristina between 1622-1626. The Dutch Renaissance style castle was designed by Casper van Panten. After the Crown donated Vibyholm to Gustaf Gustafsson af Vasaborg it has been owned by several families. The castle was left to decay in the early 1700s, but restored by Gustaf Ulf Claesson Bonde af Säfstaholm in the 1730s. The next restorations were made in the early 1800s and between 1852-1854. Today Vibyholm is privately owned and not open to the public.
References:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.